Paper-making machine



A. BELLEMARE .PAPER MAKNC- MACHINE Filed Aug. 26 1927 uw y. H

@55 vention applied thereto;

estense aug. ie, ieee Y atacan ARTHUR BELLEMARE, OF TREE'RIVERS, QUEBEC, CANADA. y

:PAPER-manine MAcHIivn.

A Application filed Aug-'ust 26, 192?, Serial No. 215,680, and in Canada October 19, 1926.

My invention relates particularly to paper vmaking machines of the high speed type 1n `which the paper during the processof manufacture' is fed through a battery of dryer 5 rolls at a speed of approximately a thousand feet per minute.

One of the principal aims .of modernde.l

velopment in the paper industry has been to l5 .increasethe rate of production, and the speed of operation of the paper making machines has increased to such an extent that it is of vital importance that all possible precau-l tions bel taken to prevent the machines being @0 lput out' of commission as heavy loss is ncurred if a machine is rendered inoperative even, for a short time.l l

. @ne of the causes of breakdowns which have vcaused paper manufacturers considerable concern in the past has been the breakage of the ropes on the dryers hereinbefore referred to. These ro es, owing toA their high speed of travel, ave a tendency jump from the yooves in which they normally run and w en this occurs they at once become entangled inA protruding parts on the machine frame or dryer heads and so tieup the machine that it 'usually takes two or three hours to set the machine in operationv again.. The resultant loss will readily be appreciated when itis considered that the niachine is capable 'of producing sixty thousand Yfeet ofpaper per hour.

The present invention seeks to reduce no vthese' losses to a minimum by eliminating so far as possible the danger of breakage of the ropes in the event of their displacement from' the dryer rolls. Y To this end 'my invention consists ofthe and illustrated and pointed -out inthe claims. For full comprehensiomzhowever, of inv Vcoinp'anyi'ng drawings in which similar ref# erence characters indicate the sameparts,

and wherein:

-o a part of a paper machine'having my inf Thesedryer rolls arev disposed in staggered horizontal arrangement with closed ends 7 and 'constitutes a steam chamberv with which a4 'end'l of thsstrip 'placed in what is known as the nip of the y y ropes and is carried by the latter successively invention reference must be had to .the ucv' Figure l is a diagrammatic frontelevation Figure 2 is a transverse sectional view `taken on line 2-2 Figure 3.

Figure ,3 is a fragmentary front elevation drawn to a larger-scale and illustrating the preferred arrangement of the guiding brackets.

Figured is a sectional'view of oneof'the guiding Ibrackets* illustrating. its position relatively to anadjacent dryer roll;. j' Figure 5 is a sectional view taken on' line @s llfigure 6 is a detailperspe'ctive view xof one of the guiding brackets forming a part of my invention..

' Referring to the accompanying drawings, the frame of the machine is indicated at 2,

the'dryer rolls at'v`3,^the ropes by which the paper is initially fed through the `dryers at 4,

the paper, at'the point at which lit enters the ,f

nip of the ropes-in the initial feeding oparound ,the dryers in unisonwith the paper The .dryers are of hollow cylindrical form the interior of each so steam supply pipe not shown communicates.

ese yersgare arranged in 'tvvo horizontal series located Aoneabove the other, with the dryers of one staggereg relatively to those of the other, and the are rotatably supported on horizontal sha ts 8 which are gournalled in bearings in themachiue frame Zsuitable means being employed to drive the dryers ata kuniform Speed.

The ropes 4 ar'e located at the'tending side of the machine only and run in circumferential grooves 9 inthe dryers and they are kept constantly under tension by Va -weighted shave 10.' ese-ropes arelonly used4 to 95 start the paper throughv the dryers.v In this initial feeding operationfthe-width of the paper, as it moves towards the dryers, is req duced by a movable spray device until it is e5 lcombination construction and particular ar,

' rangement of the parts hereinafter described approximately-but three inches, and the free 10c as it reaches the dryers is around the dryersof the entire group, finally i passing therefrom.. to thecalendars (not 105 shown) .This initial travel completes the feeding operation so far as the ropes are 'concerned as the'p'aper is subsequently -fed by the frictional contact with the dryers and f felt, this subsequent travel causing it to asme sume its proper alignment and consequently leave the ropes so that the latter simplyrun idly in their grooves untilthey are again calledl upon to perform the initial feedingoperation.l j

As hereinbefore pointed outr these ropes, owing to their highv rate of speedhave a tendency to jump from the grooves,"an d as these grooves are locatedv in close proximityto the adjacent end of the dryers the ropes slip ott into the narrow space between'the dryer heads and machine frame and' becomeso entangled with the latter that breakage inevitably occurs before the machine can be A stopped. The present invention' seeks to prevent this by providing guiding means adjacent dryer head and terminates in an up@ turned lip 14 which enters the usual recess 1'5' which Will receive the' ropes in the event of them' jumping .fromtheir grooves and prevent them from becoming entangled with the frame or dryers,` and whichv will facilitate the repositioning of `them in their respective grooves. Tothis end I mount a series `of guide brackets 12 `upon the'machine frame t adjacent each dryer head and arrange them in, arcs conforming vwith thosek portions of the peripheries of the dryers that are in con starrt contact with the ropes as indicated in. Figure l, so that when the ropes become diefy placed they will simply run on the brackets ,j

and as the path they follow on the latter substantially "conforms with that of, the' grooves they will not be subjected tov any severe stresses or strains; and the machine can be stopped and the ropes replacedvvith little loss of time. Y

The brackets illustrated constitute the preerred embodiment of my invention but it is tobe distinctly understood that the con struction may be modiied without departing from the spirit of the invention. f For instance, one adjustable semi-circular bracket may be substituted for each series and still secure beneficial results.

' lin the illustrated embodiment bracket is bolted to the machine trame as at 13 adjacent one end and entends therefrom tothe in the latter. The ropeengaging surface 16 ofthe bracket is curved concentrically to occur unless the ropes are detective or become worn.

What I claim is as follows:

1. In a aper making machine, the combination 'oip a rotary dryer roll having a are concentric With one oi said rolls,

metiera' grooved periphery, a rope adapted to run inv said groove, and means adapted to receive said rope when it becomes displaced .from the groove, substantially as described.

2. in a paper making machine, the com-v bination of a rotary dryer roll having a grooved periphery, a rope adapted to run in said groove, and a'series of devices locatedy in lined position adjacent the dryer roll and arranged in an arc concentric to the periph ery of the roll, said devices being adapted to receive the rope when it is displaced from its groove, substantially as'described.

nation of a plurality ot dryer rolls, the periphery of each of which is grooved adja- 3. In a paper making machine, the coinhif I' cent one end, ropes adapted to run in said grooves, andmeans located in position ad jacentsaidoend of each dryer roll and adapt; ed to receive said ropes when they become displaced tronithe grooves, said means presenting a vpath for the ropes substantially the saine as that presented by the grooves', substantially asdescribed.`

bination of a' plurality of dryer rolls, the periphery of each' et which is grooved adja cent one end, ropes adapted to run in-said ooves, and vmeans located in position adjacent said grooved end -ot the dryer roll and adapted to receive said ropes when they v i d. in a paper making machine,"the conip become *displaced from the grooves, said means consist-ing ci a plurality et seriesoit l brackets, each series being arranged in an tired position adjacent the dryer roll and adapted to receive said rope vvhen it becomes displaced from said grccva said bracket having a ropeengaging suriac-e curved conn centrically with the periphery of said roti,

substantially described.

. 9? peper making machine, the com bination of av rotary dryer m11, ham 2 groove in its periphery adjacent one en p rope adapted to run in said groove, and n bracket located in tired position adjacent the said grooved end of the .dryer roll and adapted to receive said. rape when it becomes displaced from said groove, said bracket having a ropemengaging surface curved concentrically with the periphery ot said roll and an upwardly projecting guard for preventing outward displacement ot the rope when on said bracket, substantially as described, y

7. In a paper making machine, the com bination of a rotary dryer roli having a groove in its periphery adjacent one end thereof, a rope adapted to run in said subs n'iachine,v the conn,

e adapted to run in said Groove, and a racket iocated inw` imA groove, and means for limiting lateral dis- 13@ placement yof the rope, substantially as da scribed.

8. In a paper makin machine, the combination o the frame t 55 rotatably mo'l'mted in the a groove in its periphery ereof, a dryer roll frame and having adjacent one end thereof, a rope adapted to run in said oove, and a bracket mounted upon the rame for limiting lateral displacement of 10 the rope towards the frame. 9. In a paper machine, the comhinatio of a rotary dryer roll having a groove in its periphery l adapted to run in said 15 gular bracket located in cent said rope,

adjacent one end thereof, a rope groove, and an anxed position adjasaid lbrackety having a part ARTHUR BELLEMARE. 

